Nucleic acid-protein interfaces studied by MAS solid-state NMR spectroscopy

Area of Science:

• Biochemistry
• Structural Biology
• Biophysics

Background:

• Solid-state NMR (ssNMR) is effective for large protein assemblies but limited for nucleic acid-protein complexes due to signal overlap.
• Recent advancements have enabled RNA structure determination by ssNMR, paving the way for complex studies.

Purpose of the Study:

• To review ssNMR methodologies for investigating nucleic acid-protein interfaces.
• To highlight the first structure determination of an RNA-protein complex using ssNMR.

Main Methods:

• Review of ssNMR techniques including chemical shift/peak intensity perturbations.
• Application of direct distance measurements and paramagnetic effects.
• Utilizing ssNMR-derived intermolecular restraints for structure determination.

Main Results:

• Established ssNMR methodologies for analyzing nucleic acid-protein interactions.
• Demonstrated the feasibility of determining RNA-protein complex structures via ssNMR.
• Presented the first ssNMR-based structure of an RNA-protein complex.

Conclusions:

• ssNMR is a powerful tool for elucidating nucleic acid-protein complex structures.
• The reviewed methods provide new avenues for structural biology research.
• This work establishes a foundation for future ssNMR studies of biomolecular complexes.